25826266909 has 16 divisors (see below), whose sum is σ = 26814816000. Its totient is φ = 24855367680.

The previous prime is 25826266903. The next prime is 25826266981. The reversal of 25826266909 is 90966262852.

It is not a de Polignac number, because 25826266909 - 2⁵ = 25826266877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25826266909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25826266903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4560922 + ... + 4566580.

It is an arithmetic number, because the mean of its divisors is an integer number (1675926000).

Almost surely, 2^25826266909 is an apocalyptic number.

It is an amenable number.

25826266909 is a deficient number, since it is larger than the sum of its proper divisors (988549091).

25826266909 is a wasteful number, since it uses less digits than its factorization.

25826266909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7188.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 25826266909 in words is "twenty-five billion, eight hundred twenty-six million, two hundred sixty-six thousand, nine hundred nine".